Pressure-resistance hose having watertight structure

ABSTRACT

Disclosed is a pressure-resistance hose having a watertight structure capable of preventing a due condensation phenomenon, called a sweating phenomenon, from occurring on an exposed end or a surface of the pressure-resistance hose by coating adhesives on both overlapping ends of the pressure-resistance hose including polyethylene mixed fabrics and a watertight film coated on upper and lower surfaces of the polyethylene mixed fabrics in such a manner that the polyethylene mixed fabrics exposed along an end portion of the pressure-resistance hose are covered with adhesives. The reliability and endurance of the pressure-resistance hose are improved, thereby achieving a high value-added pressure-resistance hose.

CROSS REFERENCE TO PRIOR APPLICATION

This is a U.S. national phase application under 35 U.S.C. §371 ofInternational Patent Application No. PCT/KR03/00624, filed Mar. 28,2003, and claims the benefit of Korean Patent Application No.20-2002-0009419, filed Mar. 29, 2002. The International Application waspublished in English on Oct. 9, 2003 as WO 03/083342 A1 under PCTArticle 21(2).

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a pressure-resistance hose, and moreparticularly to a pressure-resistance hose having a watertight structurecapable of preventing a due condensation phenomenon, called a “sweatingphenomenon”, from occurring on an exposed end or a surface of thepressure-resistance hose by coating adhesives on both overlapping endsof the pressure-resistance hose including polyethylene mixed fabrics anda watertight film coated on upper and lower surfaces of the polyethylenemixed fabrics in such a manner that minute pores of polyethylene mixedfabrics exposed along an end portion of the pressure-resistance hose arecovered with adhesives.

2. Description of the Related Art

Generally, a pressure-resistance hose is used for conveyinghigh-pressurized liquid or gas to a predetermined place, so it requiressuperior flexibility as well as a pressure-resistance quality.

In order to satisfy the above characteristics in a pressure-resistancehose, the applicant of the present invention has filed a patentapplication entitled “bonding structure for forming apressure-resistance hose” with Korean Patent and Trademark Office, andhas obtained Korean Patent No. 317060. According to the above patent, anintegral type hose having a closed sectional surface is provided. Theintegral type hose has a multi-layered tube structure including a firstfiber layer coated on an outer surface of a first tube, a second tubelayer coated on an outer surface of the first fiber layer, and a secondfiber layer and a third tube layer sequentially coated on an outersurface of the second tube. In addition, there is provided a bondingstructure for forming the pressure-resistance hose. According to theabove bonding structure, a flexible raw fabric is formed by coating awatertight film on upper and lower surfaces of planar-type polyethylenemixed fabrics. Then, the flexible fabric is rolled in a cylindricalshape in such a manner that opposite ends of the flexible fabric areoverlapped with each other. After that, adhesives are applied to theflexible fabric, thereby forming the pressure-resistance hose.

However, the integral type hose having the multi-layered tube structureis bulky because the first to third tubes are made of rubber or PVC andthe first and second fiber layers interposed therebetween. For thisreason, the manufacturing cost of the pressure-resistance hose isincreased, flexibility of the pressure-resistance hose is lowered, andthe manufacturing process of the pressure-resistance hose iscomplicated, thereby lowering productivity of the pressure-resistancehose.

In addition, the above pressure-resistance hose, which is made of theflexible fabric including the watertight film and the polyethylene mixedfabrics, can effectively spray high-pressurized gas or liquid withsaving the manufacturing cost thereof since it can be simply fabricatedwith a thin thickness and superior flexibility. However, the abovepressure-resistance hose forms minute pores in the polyethylene mixedfabrics even if the polyethylene mixed fabrics are securely bonded tothe watertight film coated on upper and lower surfaces of thepolyethylene mixed fabrics, so a dew condensation phenomenon, called a“sweating phenomenon”, is created lengthwise along the flexible rawfabric rolled in a cylindrical shape.

That is, the polyethylene mixed fabrics inserted into a center of theflexible raw fabric as reinforcement cores are fabricated by weavingplural strands of fine filaments as weft and warp. Thus, when surfacesof the polyethylene mixed fabrics are coated with the watertight film,water or air is prevented from spouting out of the surface of the rawfabric due to the watertight film coated on the surfaces of thepolyethylene mixed fabrics, so the pressure-resistance hose can endureagainst pressure applied thereto. However, water or air spouts out ofthe surface of the raw fabric in a length direction or in a transversedirection of the polyethylene mixed fabrics arranged in parallel to thewatertight film through minute pores formed in the polyethylene mixedfabrics.

The above problem becomes extreme when the surface of thepressure-resistance hose is worn or damaged, thereby lowering thereliability of the pressure-resistance hose.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve theabove-mentioned problems occurring in the prior art, and an object ofthe present invention is to provide a pressure-resistance hose capableof preventing water or air from spouting out of the pressure-resistancehose through minute pores formed in polyethylene mixed fabrics acting ascores of a raw fabric of the pressure-resistance hose, thereby improvingthe reliability of products and achieving high value-added products.

In order to accomplish the object, there is provided apressure-resistance hose having a watertight structure, thepressure-resistance hose comprising: a hose layer including polyethylenemixed fabrics and at least one watertight film coated on at least one ofupper and lower surfaces of the polyethylene mixed fabrics, both ends ofthe hose layer being overlapped with each other; and adhesives coated onboth overlapped ends of the hose layer such that minute pores ofpolyethylene mixed fabrics exposed along both overlapped ends of thehose layer are covered with adhesives, thereby preventing a dewcondensation phenomenon from being created on exposed ends or surfacesof the pressure-resistance hose.

According to a preferred embodiment of the present invention, adhesivescoated on the overlapping ends of the hose layer include an adhesivefilm having predetermined viscosity and surrounding exposed ends of thepressure-resistance hose. In addition, it is possible to shield pores ofthe polyethylene mixed fabrics by introducing adhesive liquid, which ismildly blended with low viscosity, into ends of the polyethylene mixedfabrics from both ends of a supplied raw fabric.

In addition, the watertight structure of the pressure-resistance hoseincludes an adhesive agent coated between overlapping surfaces of thehose layer and diffused from overlapping surfaces of the hose layer inorder to shield the overlapping ends of the hose layer when externalforce is applied thereto by a roller during a hose forming process.Selectively, an inner overlapping end of the hose layer is outwardlybent such that the inner overlapping end makes contact with the outeroverlapping end of the hose layer, thereby shielding exposed ends of thepolyethylene mixed fabrics surrounded by the watertight film.

According to another embodiment of the present invention, a resin filmis coated on an inner overlapped end of the hose layer exposed to aninner portion of the pressure-resistance hose in such a manner thatminute pores of polyethylene mixed fabrics exposed along both overlappedends of the hose layer are covered with the resin film, therebypreventing a dew condensation phenomenon from occurring on exposed endsor surfaces of the pressure-resistance hose.

BRIEF DESCRIPTION OF THE DRAWINGS

The above object and other features and advantages of the presentinvention will be more apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a partially-cut perspective view showing a part of a coatingsection of a pressure-resistance section;

FIG. 2 is an enlarged sectional view showing an overlapping sectionshown in FIG. 1;

FIG. 3A is an enlarged sectional view showing a pressure-resistance hosehaving a watertight structure including an adhesive coating section;

FIG. 3B is an enlarged sectional view showing a pressure-resistance hosehaving a watertight structure including adhesive liquid introduced intoa polyethylene mixed fabrics;

FIG. 3C is an enlarged sectional view showing a pressure-resistance hosehaving a watertight structure including an adhesive agent coated on anoverlapping part of watertight films;

FIG. 3D is an enlarged sectional view showing a pressure-resistance hosehaving a watertight structure, which is formed by bending overlappingends of the watertight films; and

FIGS. 4A, 4B, 5A, 5B, 6A, 6B, 7A and 7B are views showingpressure-resistance hoses having watertight structures formed by usingadditional films according to other embodiments of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, a preferred embodiment of the present invention will bedescribed with reference to the accompanying drawings. In the followingdescription of the present invention, a detailed description of knownfunctions and configurations incorporated herein will be omitted when itmay make the subject matter of the present invention rather unclear.

Embodiment 1

FIG. 1 is a partially-cut perspective view showing a part of a coatingsection of a pressure-resistance section 100, and FIG. 2 is an enlargedsectional view showing an overlapping section shown in FIG. 1.

The pressure-resistance hose 100 is fabricated by using polyethylenemixed fabrics 110 as reinforcement cores. A watertight film 120 iscoated on upper and lower surfaces of the polyethylene mixed fabrics110, thereby forming a raw fabric 130 of the pressure-resistance hose100. Both ends of the raw fabric 130 are overlapped with each other suchthat the raw fabric 130 has a cylindrical shape. Then, an adhesive agent140 is applied to the raw fabric 130 to form an adhesive section,thereby forming the pressure-resistance hose 100 having a thinthickness, light weight, and superior flexibility and endurance.

FIGS. 3A to 3D are sectional views showing various watertight structuresof the pressure-resistance hose 100 according to the present invention,where overlapping parts of the raw fabric 130 are illustrated in detail.

In the pressure-resistance hose 100 of the present invention, exposedends of the polyethylene mixed fabrics 110 coated with the watertightfilm 120 are sealed in order to effectively achieve the object of thepresent invention.

FIG. 3A is an enlarged sectional view showing the pressure-resistancehose 100 having a watertight structure including an adhesive coatingsection 200. The adhesive coating section 200 is coated betweenoverlapping parts of the raw fabric 130 including the polyethylene mixedfabrics 110 and the watertight film 120 coated on upper and lowersurfaces of the polyethylene mixed fabrics 110, in such a manner thatends of the raw fabric 130 can be sufficiently sealed by the adhesivecoating section 200.

The adhesive coating section 200 coated between overlapping parts of theraw fabric 130 includes an adhesive film surrounding exposed ends of thepressure-resistance hose 100 with predetermined viscosity. Exposed endsof the polyethylene mixed fabrics 110 coated with the watertight film120 are completely sealed by the adhesive coating section 200. Thus,water is prevented from flowing through the overlapping part of the rawfabric 130 even if high-pressure is applied to the pressure-resistancehose 130.

The pressure-resistance hose 130 having the above-mentioned structure isfabricated by using a pressing device (not shown) for pressing aplate-shaped raw fabric wound around a feeding roll into a cylindricalhose member. In addition, the adhesive coating section 200 is formed byusing a part of a raw fabric conveying device included in the pressingdevice forming the pressure-resistance hose.

That is, the raw fabric 130 fabricated by using the polyethylene mixedfabrics 110 is released from a winding roll and sequentially passesthrough the raw fabric conveying device including a conveying roller, asupport and a tensioning roller, and a bending device installed at arear portion of the conveying device so as to bend the raw fabric into acylindrical shape. At this time, an adhesive agent supplying device (notshown) is preferably provided adjacent to the support so as to form thewatertight structure at both ends of the raw fabrics 130.

If the raw fabric 130 released from the winding roll is coated on bothends thereof with the adhesive coating section 200 in advance, aseparate adhesive agent supplying device is not required in the pressingdevice. The adhesive coating section 200 can be formed through variousmethods and devices according to the present invention.

FIG. 3B shows a watertight structure according to another embodiment ofthe present invention. According to the watertight structure shown inFIG. 3B, adhesive liquid 210, which is mildly blended and easilyabsorbed into the polyethylene mixed fabrics 110, is introduced into anend portion of the polyethylene mixed fabrics 110 exposed along anoverlapping end of the raw fabric 130, such that minute pores of thepolyethylene mixed fabrics 110 are filled with adhesive liquid 210.

A suction passage of the polyethylene mixed fabrics 110 exposed alongthe overlapping end of the raw fabric 130 is shielded by adhesive liquid210 filled into the minute pores. To this end, mildly blended substancehaving low viscosity is used as adhesive liquid 210. Adhesive liquid 210filling the minute pores of the polyethylene mixed fabrics 110 alsoclosely bonded to the watertight film 120, thereby providing a stablewatertight structure.

FIG. 3C shows a watertight structure of the pressure-resistance hose 100achieved by pressing the adhesive agent 140 coated on overlapping endsof the raw fabric 130.

The watertight structure of the pressure-resistance hose 100 is formedby pressing the adhesive agent 140 coated between both overlapping endsof the raw fabric 130 using a roller. At this time, the adhesive agent140 is diffused so that the overlapping part of the raw fabric 130 issealed by the adhesive agent 140. In addition, the adhesive coatingsection 200, which surrounds the exposed ends of the raw fabric 130while maintaining predetermined viscosity as described with reference toFIG. 3A, can be used together with the adhesive agent 140 coated betweenthe overlapping ends of the raw fabric 130 in order to stably form thewatertight structure

FIG. 3D shows a watertight structure of the pressure-resistance hose 100achieved by bending both overlapping ends of the raw fabric 130.

The watertight structure of the raw fabric 130 includes a bendingsection 150 formed by outwardly bending an inner overlapping end of theraw fabric 130. The bending section 150 is closely bonded to the outeroverlapping end of the raw fabric 130, so that watertight efficiency ofthe watertight film 120 surrounding the polyethylene mixed fabrics 110can be improved.

Since a surface of the bending section 150 consists of the watertightfilm 120, the watertight film 120 is only exposed when the bendingsection 150 is bonded to the outer overlapping end of the raw fabric 130by means of the adhesive agent 140, while completely shielding thepolyethylene mixed fabrics 110 by means of the watertight film 120.

As described above, the watertight structures of the present inventioncompletely shield the minute pores of the polyethylene mixed fabrics 110by surrounding overlapping ends of the raw fabric 130 using the adhesiveagent. Besides above-mentioned watertight structures, another watertightstructure can be achieved by using a separate coating film as describedbelow with reference to embodiment 2.

Embodiment 2

FIGS. 4A and 4 b show a watertight structure of a pressure-resistancehose according to a second embodiment of the present invention.According to the watertight structure of the present embodiment, aninner overlapping end of a raw fabric 130 including polyethylene mixedfabrics 110 and a watertight film 130 coated on upper and lower surfacesof the polyethylene mixed fabrics 110 is covered with a strip-type resinfilm 220.

FIG. 4A shows the raw fabric 130 in a developed state, to which theresin film 220 is attached, and FIG. 4B shows the pressure-resistancehose fabricated by using the raw fabric 130 having the resin film 220attached thereto.

According to the present embodiment, the strip-type resin film 210 isattached to one side of the raw fabric 130 along a length directionthereof. A part of the resin film 210 is overlapped with one end of theraw fabric 130 and the other part of the resin film 210 is exposed to anexterior. Accordingly, when overlapping ends of the raw fabric 130 areoverlapped with each other, an overlapping part of the raw fabric 130can be stably covered by the resin film 210.

As shown in FIG. 4B, an inner exposed end of the pressure-resistancehose 100 of the present invention having the above structure is coveredwith the resin film 210. That is, the strip-type resin film 210 isattached to a surface of the inner watertight film 130 coated on thelower surfaces of the polyethylene mixed fabrics 110 along a lengthdirection of the pressure-resistance hose 100. Thus, water filled in thepressure-resistance hose 100 is strictly isolated from the polyethylenemixed fabrics 110 provided as reinforcement cores of the raw fabric 130.

Therefore, a dew condensation phenomenon caused by the minute pores ofthe polyethylene mixed fabrics 110 can be effectively prevented.

FIGS. 5A and 5B show another watertight structure according to thepresent invention, in which a resin film 320 having a width larger thana width of the raw fabric 130 is stacked on one surface of the rawfabric 130.

The width of the resin film 320 is larger than a width of the watertightfilm 120 coated on the surfaces of the polyethylene mixed fabrics 110and one end of the resin film 320 exceeding the width of the watertightfilm 120 by a predetermined length covers the overlapping ends of theraw fabric 130.

That is, the resin film 320 surrounds over a whole inner surface of thepressure-resistance hose 100, and one end of the resin film 320 isbonded to a predetermined part of the resin film 320 positioned at theinner surface of the pressure-resistance hose 100 beyond the overlappingends of the pressure-resistance hose 100. Accordingly, the polyethylenemixed fabrics 110 exposed along an inner end of the pressure-resistancehose 100 is completely isolated from an interior of thepressure-resistance hose 100, so water is prevented from beingdischarged through the minute pores of the polyethylene mixed fabrics110, thereby preventing the dew condensation phenomenon from beingcreated on the outer surface of the pressure-resistance hose 100.

FIGS. 6A and 6B show a watertight structure according to anotherembodiment of the present invention, in which a U-shaped resin film 420is provided to surround an inner overlapping end of the raw fabric 130.

The resin film 420 of the present embodiment is arranged such that itsurrounds the inner overlapping end of the pressure-resistance hose 100.The watertight structure of the present embodiment is substantiallycorresponding to the watertight structure shown in FIG. 3A. However,instead of coating the adhesive coating section 200 on the overlappingends of the raw fabric 130 including polyethylene mixed fabrics 110 andthe watertight film 130 coated on upper and lower surfaces of thepolyethylene mixed fabrics 110, the U-shaped resin film 420 is attachedto the inner overlapping end of the raw fabric 130. The watertightstructure shown in FIGS. 6A and 6B represents an operational effectidentical to that of the watertight structure shown in FIGS. 3A and 3B,because the exposed overlapping end of the raw fabric 130 issufficiently covered with the adhesive coating section 200 or theU-shaped resin film 420.

The resin film 420 surrounding the inner overlapping end of thepressure-resistance hose 130 also completely seals exposed front ends ofthe polyethylene mixed fabrics 110, which are coated on upper and lowersurface thereof with the watertight film 120. Therefore, water isprevented from flowing through the inner overlapping end of the rawfabric 130 even if high-internal pressure is applied to thepressure-resistance hose 100.

FIGS. 7A and 7B show a watertight structure according to anotherembodiment of the present invention. The watertight structure accordingto the present embodiment is substantially identical to the watertightstructure shown in FIGS. 5A and 5B. However, according to the presentembodiment, an extension part formed at one end of a resin film 520 isoutwardly bent in such a manner that one end of the raw fabric 130 issurrounded by the extension part. Then, the extension part of the resinfilm 520 is bonded to the other end of the resin film 520, therebymaintaining the watertight effect by means of the resin film 520surrounding the exposed ends of the polyethylene mixed fabrics 110.

It is preferred that the above-mentioned resin films 220, 320, 420 and520 are bonded closely adjacent to the inner exposed end of eachpressure-resistance hose. However, as shown in FIGS. 4A to 5B, it ispossible to bond the resin films 220, 320, 420 and 520 to the exposedend of each pressure-resistance hose while forming a predetermined spacebetween the resin films and the exposed end. In this case, the samewatertight effect can be achieved by means of the resin films.

On the other hand, hard resin films or soft resin films are selectivelyused as the resin films 220, 320, 420 and 520 depending on theuse-purpose of the pressure-resistance hose. In detail, the hard resinfilms include a high density polyethylene (HDPE) film, a biaxiallyoriented polypropylene (BOPP) film, and a polyethylene terephthalate(PET) film.

The HDPE film is made of hard polyethylene having a density about 0.942to 0.965 g/cm². The HDPE film also has a tensile strength about 330 to340 kg/cm², which is about 2.5 times as compared with a tensile strengthof a low density polyethylene (LDPE) film. That is, the HDPE film has abreak point identical to a break point of the polyethylene mixedfabrics. The BOPP film is formed by biaxially expanding polypropylene inlongitudinal and transverse directions thereof, so it has superiortensile strength and impact strength. In addition, a surface of the BOPPfilm is strong so that a scar is rarely formed on the surface of theBOPP film. The PET film is formed by expanding a film in longitudinaland transverse directions thereof after forming the film by melting andpressing PET chip polymer. The PET film has a greatest tensile strengthamong general plastics and a superior heatproof characteristic.

In addition, the soft resin films including the LDPE film, a castingpolypropylene (CPP) film, thermoplastic elastomer (TPE), and silicon canbe used as the resin films 220, 320, 420 and 520.

The LDPE film is made of soft polyethylene having a density about 0.91g/cm². About 60% of the LDPE film is a crystallization section, so ithas superior flexibility. Although the LDPE film has a weak tensilestrength, it has superior impact-resistance and workability. The CPPfilm is achieved without expanding polypropylene. The CPP film hassuperior flexibility and printability, with improved transparency andbrilliance. In addition, TPE has a combined structure, in which hardhigh-polymer material is mixed with soft high polymer material, andrepresents elasticity identical to the elasticity of rubber in thenormal temperature, so flexibility of the pressure-resistance hose isremarkably improved.

As described above, according to the present invention, thepressure-resistance hose having the watertight film is capable ofpreventing the due condensation phenomenon from being created on theexposed end or the surface of the pressure-resistance hose by coatingadhesives on both overlapping ends of the pressure-resistance hoseincluding polyethylene mixed fabrics and the watertight film coated onupper and lower surfaces of the polyethylene mixed fabrics, in such amanner that the polyethylene mixed fabrics exposed along the end portionof the pressure-resistance hose are covered with adhesives. Accordingly,the reliability and endurance of products can be improved, therebyachieving high value-added products.

While the invention has been shown and described with reference tocertain preferred embodiments thereof, it will be understood by thoseskilled in the art that various changes in form and details may be madetherein without departing from the spirit and scope of the invention asdefined by the appended claims.

1. A pressure-resistance hose having a watertight structure, thepressure-resistance hose comprising: a hose layer including polyethylenemixed fabrics and at least one watertight film coated on at least one ofupper and lower surfaces of the polyethylene mixed fabrics, both ends ofthe hose layer being overlapped with each other; and adhesives coated onboth overlapped ends of the hose layer such that minute pores ofpolyethylene mixed fabrics exposed along both overlapped ends of thehose layer are covered with adhesives, thereby preventing a dewcondensation phenomenon from occurring on exposed ends or surfaces ofthe pressure-resistance hose.
 2. A pressure-resistance hose as claimedin claim 1, wherein adhesives coated on the overlapping ends of the hoselayer include an adhesive film having a predetermined viscosity andsurrounding exposed ends of the pressure-resistance hose.
 3. Apressure-resistance hose as claimed in claim 1, wherein adhesives coatedon the overlapping ends of the hose layer include adhesive liquid, whichis mildly blended with low viscosity, introduced into ends of thepolyethylene mixed fabrics from both ends of a supplied raw fabric inorder to shield pores of the polyethylene mixed fabrics.
 4. Apressure-resistance hose as claimed in claim 1, wherein the watertightstructure of the pressure-resistance hose includes an adhesive agentcoated between overlapping surfaces of the hose layer and diffused fromoverlapping surfaces of the hose layer in order to shield theoverlapping ends of the hose layer when external force is appliedthereto by a roller.
 5. A pressure-resistance hose as claimed in claim4, wherein the adhesive agent is formed on an adhesive film havingpredetermined viscosity and surrounding exposed ends of the hose layer.6. A pressure-resistance hose as claimed in claim 1, wherein an inneroverlapping end of the hose layer is outwardly bent such that the inneroverlapping end makes contact with an outer overlapping end of the hoselayer, thereby shielding exposed ends of the polyethylene mixed fabricssurrounded by the watertight film.
 7. A pressure-resistance hose havinga watertight structure, the pressure-resistance hose comprising: a hoselayer including polyethylene mixed fabrics and at least one watertightfilm coated on at least one of upper and lower surfaces of thepolyethylene mixed fabrics, both ends of the hose layer being overlappedwith each other; and a resin film coated on an inner overlapped end ofthe hose layer exposed to an inner portion of the pressure-resistancehose, in such a manner that minute pores of polyethylene mixed fabricsexposed along both overlapped ends of the hose layer are covered withthe resin film, thereby preventing a dew condensation phenomenon frombeing created on exposed ends or surfaces of the pressure-resistancehose.
 8. A pressure-resistance hose as claimed in claim 7, wherein theresin film has a strip shape and is installed at an outer surface of thewatertight film coated on the surfaces of the polyethylene mixed fabricsso as to cover inner portions of both overlapping ends of the hoselayer.
 9. A pressure-resistance hose as claimed in claim 7, wherein theresin film is stacked on the outer surface of the watertight film andhas a width larger than a width of the watertight film coated on thesurfaces of the polyethylene mixed fabrics in such a manner that one endportion of the resin film covers inner portions of both overlapping endsof the hose layer.
 10. A pressure-resistance hose as claimed in claim 7,wherein the resin film includes a U-shaped strip member surrounding theinner overlapping end of the hose layer.
 11. A pressure-resistance hoseas claimed in claim 7, wherein the resin film is stacked on the outersurface of the watertight film and has a width larger than a width ofthe watertight film coated on the surfaces of the polyethylene mixedfabrics, and one end of the resin film is bent in a U-shape so as tosurround the inner overlapping end of the hose layer.
 12. Apressure-resistance hose as claimed in claim 7, wherein the resin filmis any one selected from the group consisting of a high densitypolyethylene (HOPE) film, a biaxially oriented polypropylene (BOPP)film, a polyethylene terephthalate (PET) film, a low densitypolyethylene (LDPE) film, a casting polypropylene (CPP) film,thermoplastic elastomer, and a silicon.